1// RUN: %clang_cc1 -verify -Wno-objc-root-class %s
2// expected-no-diagnostics
3
4@protocol MyProto1
5@optional
6- (void) FOO;
7@optional
8- (void) FOO1;
9@optional
10- (void) REQ;
11@optional
12@end
13
14@interface  MyProto2 <MyProto1>
15- (void) FOO2;
16- (void) FOO3;
17@end
18
19@implementation MyProto2
20- (void) FOO2{}
21- (void) FOO3{}
22@end
23